fix(app): 修复 AppController 安全与查询问题

- 加强异常处理、类型安全和图片上传校验
- 优化设备相关查询，避免重复访问数据源
- 补充并记录并发测试与审查修复实施计划

tmp/hatch-pet/omen-cat/run/prompts/row-retries/running-left.md

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+Create Codex pet row `running-left` for `youmiao`: exactly 8 full-body frames in one horizontal strip on flat pure yellow #FFFF00.
+
+Use the attached canonical base for identity and the layout guide only for spacing. Same pet in every frame: Dark Omen-inspired cartoon cat; oversized angular purple cat-eared hood; black void face with three cyan energy marks; compact feline body; broad charcoal armor and bandage wraps; long attached tail; no weapons, logos, text, scenery, shadows, smoke, particles, detached effects, blur, or bloom. Preserve silhouette, face, palette, material, proportions, markings, and props.
+
+Keep apparent pet scale and baseline stable within the row unless the state itself intentionally changes vertical position, such as `jumping`.
+
+Action: Dragging-left loop: show directional movement to the left through body and limb poses only.
+
+State requirements:
+- Show directional drag movement to the left through body, limb, and prop movement only.
+- The row must unmistakably face and travel left.
+- The movement cadence must alternate visibly across the 8 frames instead of repeating one nearly static stride.
+- Do not draw speed lines, dust clouds, floor shadows, motion trails, or detached motion effects.
+
+One centered complete pose per invisible slot. No text, boxes, guide marks, scenery, shadows, glows, motion blur, speed lines, dust, detached effects, stray pixels, or #FFFF00 colors in the pet.